Circuit board



FIG. 1 is a top-front perspective view of a circuit board showing our new design;

FIG. 2 is top-rear perspective view thereof;

FIG. 3 is another top-front perspective view thereof;

FIG. 4 is a bottom-front perspective view thereof;

FIG. 5 is a bottom-rear perspective view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front elevation thereof;

FIG. 9 is a rear elevation thereof;

FIG. 10 is a side elevation view thereof;

FIG. 11 is an opposite side elevation view thereof;

FIG. 12 is another top-front perspective view of the circuit board of FIG. 1, with circuit structures shown in broken lines omitted to show the underlying structure;

FIG. 13 is a bottom-rear perspective view thereof;

FIG. 14 is another top-front perspective view thereof;

FIG. 15 is a top-rear perspective view thereof;

FIG. 16 is a bottom-front perspective view thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is a front elevation thereof;

FIG. 20 is a rear elevation thereof;

FIG. 21 is a side elevation view thereof; and,

FIG. 22 is an opposite side elevation view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the circuit board that form no part of the claimed design. 

CLAIM The ornamental design for a circuit board, as shown and described. 